[1] Univ Lorraine, INRA, UMR Interact Arbres Microorganismes, Ctr Grand Est, F-54280 Champenoux, France
[2] Boyce Thompson Inst Plant Res, Ithaca, NY 14853 USA
[3] Univ Lancaster, New Phytologist Cent Off, Bailrigg House, Lancaster LA1 4YE, England
[4] Swedish Univ Agr Sci, Dept Soil & Environm, Box 7014, SE-75007 Uppsala, Sweden
[5] Inst Ecol & Earth Sci, Dept Bot, 40 Lai St, EE-51005 Tartu, Estonia
[6] Univ Goettingen, Forest Bot & Tree Physiol, D-37077 Gottingen, Germany
[7] Karlsruhe Inst Technol, Mol Phytopathol Dept, Fritz Haber Weg 4,Geb 30-43,2-OG, D-76131 Karlsruhe, Germany
[8] Museum Natl Hist Nat, UMR ISYEB 7205, Dept Systemat & Evolut, CP 50,45 Rue Buffon, F-75005 Paris, France
[9] Univ Gdansk, Fac Biol, Ul Wita Stwosza 59, PL-80308 Gdansk, Poland